Q:
I replaced 2 spark plugs in cylinder 5 to fix a misfire.

asked by
Byron B
on
October 21, 2016

Had a code scan not to long ago cylinder 5&6 had misfire so I did the spark plugs for it car started up but it did have oil in cylinder 5&6 now my car won't start up don't know if replacing the value cover gasket would make it start up again

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Leaking valve covers on this engine allow oil down into the spark plug recesses as you note. Besides shorting the plug, the oil degrades the boot portion of the coil which plugs onto the spark plug, creating other opportunities for a short and misfire.

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